Note: GM units are equipped with automatic evaporation of defrost water; drain is just a precaution in case of troubles.
6.4 Free room
When installing the unit leave enough free room to allow opening, correct use and easy maintenance in safe conditions.
Solution 1 Solution 3
Solution 2
Installation in a coldroom with more than one unit Solution 1
Condensate drain line Ø 28 A 6.5 Installation
Straddle version:
before mounting the unit prepare the cuts and holes in the cold room wall shown in the picture.
Fix the unit in place with the appropriate screws. Position the unit on the cold room, connect the evaporator drain tray spigot and the hole prepared in the cold room wall using the supplied fitting with pre-inserted heater (for low temperature units only). Secure with the appropriate screw.
Fill the hole in the wall with insulating material, polyurethane or silicone, and mount the hole cover.
A
mm B
mm C
mm D
mm E
mm F
a°
GM1 19 316 288 83 43 6
GM2 19 316 503 83 43 6
GM3-340 19 425 503 83 43 6
Thru-wall version (optional):
A) Prepare a opening with suitable dimensions in the cold room wall (see picture).
B) Position the unit onto the cold room wall inserting the evaporator section in the opening.
C) Fix the unit using the screws supplied.
C D E G Inject silicone all
around the panel opening
Hole Condensate drain line Ø 14
E
E C
D
F Fitting
B
A B C D E F G H
GM1 735 264 280 110 400 335 375 100
GM2 830 264 280 110 400 335 590 100
GM3 830 364 350 110 400 440 590 100
GM340 830 364 410 110 522 440 590 100
6.6 Fitting the remote panel (optional):
Fix the back plate to the wall using the pre-drilled holes; be careful the panel is kept in a vertical position.
Fit the connecting cable between panel and unit making sure not to bundle it with other cables.
ATTENTION
Maximum distance between panel and unit is 10 mt. For longer distances the special
“long distance module” should be used (optional).
ATTENTION
Check that the unit and its devices have suffered no damages during transport. Pay special attention to the components
secured to the electric panel door and to the refrigerating circuit pipes. Mount the unit as shown in the drawings; make sure that the electric connections are carried out properly.
6.7 Safety devices
The following mechanical safety devices are supplied:
1. Fixed upper and side protections for evaporator and condensing unit, secured by locking screws.
2. External fan protections placed on the evaporating and condensing units, secured with screws.
The following electrical safety devices are supplied:
a. Protection of fans (belonging to motors) against high power absorption;
with automatic reset.
b. High pressure switch (only for special components) to protect against excessive pressure; with automatic reset.
WARNING
Above devices have been developed to safeguard the operator’s safety.
6.8 Cleaning
Clean the unit carefully. Remove any dust, foreign substances and dirt possibly deposited during handling. Use detergents and degreasers.
ATTENTION
Solvents are not allowed.
7 Connecting the unit ATTENTION
Before connecting the unit make sure that mains voltage and frequency correspond to the values shown in the data plate. Voltage tolerance: +/- 10% compared to nominal value.
7.1 Electric connection
Connect the unit after checking the panel components.
ATTENTION
Connection to the electric line shall be effected applying a suitable safety device (a circuit breaker or a ground fault interrupter) selected by the installer on the basis of the line involved and of the absorption indicated on the unit plate.
If a cold room includes more units, each unit shall be provided with its own safety device.
Connect the unit paying attention to the colours of the supply cable wires:
a) 230V/1/50-60Hz 3 wires Yellow/Green = Ground Brown = Phase
b) 230V/3/50-60Hz 4 wires Grey = Phase Yellow/Green = Ground
Brown = Phase Black = Phase c) 400/3/50 Hz 5 wires Blue = Neutral Yellow/Green = Ground
Brown = Phase Grey = Phase Black = Phase We advise to install a microswitch (not supplied) on the cold room door which will - switch on the light in the cold room, stop the unit and
- override the temperature alarm (for about one hour after door closing) every time the door is opened.
The necessary cable is available with the unit. Connect it keeping in mind the following:
microswitch closed = door closed.
ATTENTION
Above microswitch is not supplied with the unit. If the microdoor cable is
disconnected or damaged, the same conditions will occur as in case of open door and connected microdoor.
“B” RANGE units (B = low temperature) are supplied with a cable for door heater connection, to be made using a fuse suitable for the door heater used.
The unit is also equipped with a cable for cold room lamp connection (lamp voltage should be 230 V and lamp max capacity 100 Watts).
ATTENTION
Do not connect microdoor, cold room light or door heater cables to the 230V line.
Each cable is equipped with a plate showing how it should be connected.
WARNING
Any defective electrical part should be replaced by trained personnel exclusively.
The electric connection should be effected by qualified personnel.
7.2 Connection to water system (water condenser)
This connection is only necessary if the unit has a water-cooled condenser. It is effected by following the indications of the tags positioned by the inlet and outlet pipes. Connection pipes should never be smaller in diameter than those on the unit. A minimum water pressure of 1 bar is required for correct operation of the unit.
8 Electric controls 8.1 Control panel
SET
Press and release
Display and modify the Setpoint Confirms commands
PRG
Press and release
Displays any alarms (if active) Opens Machine Status menù Confirms commands Press for at least 3 sec Opens Programming menù
TOUCH KNOB